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1// SPDX-License-Identifier: GPL-2.0-only
2/* leds-sunfire.c: SUNW,Ultra-Enterprise LED driver.
3 *
4 * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
5 */
6
7#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
8
9#include <linux/kernel.h>
10#include <linux/module.h>
11#include <linux/init.h>
12#include <linux/leds.h>
13#include <linux/io.h>
14#include <linux/platform_device.h>
15#include <linux/slab.h>
16
17#include <asm/fhc.h>
18#include <asm/upa.h>
19
20MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
21MODULE_DESCRIPTION("Sun Fire LED driver");
22MODULE_LICENSE("GPL");
23
24struct sunfire_led {
25 struct led_classdev led_cdev;
26 void __iomem *reg;
27};
28#define to_sunfire_led(d) container_of(d, struct sunfire_led, led_cdev)
29
30static void __clockboard_set(struct led_classdev *led_cdev,
31 enum led_brightness led_val, u8 bit)
32{
33 struct sunfire_led *p = to_sunfire_led(led_cdev);
34 u8 reg = upa_readb(p->reg);
35
36 switch (bit) {
37 case CLOCK_CTRL_LLED:
38 if (led_val)
39 reg &= ~bit;
40 else
41 reg |= bit;
42 break;
43
44 default:
45 if (led_val)
46 reg |= bit;
47 else
48 reg &= ~bit;
49 break;
50 }
51 upa_writeb(reg, p->reg);
52}
53
54static void clockboard_left_set(struct led_classdev *led_cdev,
55 enum led_brightness led_val)
56{
57 __clockboard_set(led_cdev, led_val, CLOCK_CTRL_LLED);
58}
59
60static void clockboard_middle_set(struct led_classdev *led_cdev,
61 enum led_brightness led_val)
62{
63 __clockboard_set(led_cdev, led_val, CLOCK_CTRL_MLED);
64}
65
66static void clockboard_right_set(struct led_classdev *led_cdev,
67 enum led_brightness led_val)
68{
69 __clockboard_set(led_cdev, led_val, CLOCK_CTRL_RLED);
70}
71
72static void __fhc_set(struct led_classdev *led_cdev,
73 enum led_brightness led_val, u32 bit)
74{
75 struct sunfire_led *p = to_sunfire_led(led_cdev);
76 u32 reg = upa_readl(p->reg);
77
78 switch (bit) {
79 case FHC_CONTROL_LLED:
80 if (led_val)
81 reg &= ~bit;
82 else
83 reg |= bit;
84 break;
85
86 default:
87 if (led_val)
88 reg |= bit;
89 else
90 reg &= ~bit;
91 break;
92 }
93 upa_writel(reg, p->reg);
94}
95
96static void fhc_left_set(struct led_classdev *led_cdev,
97 enum led_brightness led_val)
98{
99 __fhc_set(led_cdev, led_val, FHC_CONTROL_LLED);
100}
101
102static void fhc_middle_set(struct led_classdev *led_cdev,
103 enum led_brightness led_val)
104{
105 __fhc_set(led_cdev, led_val, FHC_CONTROL_MLED);
106}
107
108static void fhc_right_set(struct led_classdev *led_cdev,
109 enum led_brightness led_val)
110{
111 __fhc_set(led_cdev, led_val, FHC_CONTROL_RLED);
112}
113
114typedef void (*set_handler)(struct led_classdev *, enum led_brightness);
115struct led_type {
116 const char *name;
117 set_handler handler;
118 const char *default_trigger;
119};
120
121#define NUM_LEDS_PER_BOARD 3
122struct sunfire_drvdata {
123 struct sunfire_led leds[NUM_LEDS_PER_BOARD];
124};
125
126static int sunfire_led_generic_probe(struct platform_device *pdev,
127 struct led_type *types)
128{
129 struct sunfire_drvdata *p;
130 int i, err;
131
132 if (pdev->num_resources != 1) {
133 dev_err(&pdev->dev, "Wrong number of resources %d, should be 1\n",
134 pdev->num_resources);
135 return -EINVAL;
136 }
137
138 p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
139 if (!p)
140 return -ENOMEM;
141
142 for (i = 0; i < NUM_LEDS_PER_BOARD; i++) {
143 struct led_classdev *lp = &p->leds[i].led_cdev;
144
145 p->leds[i].reg = (void __iomem *) pdev->resource[0].start;
146 lp->name = types[i].name;
147 lp->brightness = LED_FULL;
148 lp->brightness_set = types[i].handler;
149 lp->default_trigger = types[i].default_trigger;
150
151 err = led_classdev_register(&pdev->dev, lp);
152 if (err) {
153 dev_err(&pdev->dev, "Could not register %s LED\n",
154 lp->name);
155 for (i--; i >= 0; i--)
156 led_classdev_unregister(&p->leds[i].led_cdev);
157 return err;
158 }
159 }
160
161 platform_set_drvdata(pdev, p);
162
163 return 0;
164}
165
166static int sunfire_led_generic_remove(struct platform_device *pdev)
167{
168 struct sunfire_drvdata *p = platform_get_drvdata(pdev);
169 int i;
170
171 for (i = 0; i < NUM_LEDS_PER_BOARD; i++)
172 led_classdev_unregister(&p->leds[i].led_cdev);
173
174 return 0;
175}
176
177static struct led_type clockboard_led_types[NUM_LEDS_PER_BOARD] = {
178 {
179 .name = "clockboard-left",
180 .handler = clockboard_left_set,
181 },
182 {
183 .name = "clockboard-middle",
184 .handler = clockboard_middle_set,
185 },
186 {
187 .name = "clockboard-right",
188 .handler = clockboard_right_set,
189 .default_trigger = "heartbeat",
190 },
191};
192
193static int sunfire_clockboard_led_probe(struct platform_device *pdev)
194{
195 return sunfire_led_generic_probe(pdev, clockboard_led_types);
196}
197
198static struct led_type fhc_led_types[NUM_LEDS_PER_BOARD] = {
199 {
200 .name = "fhc-left",
201 .handler = fhc_left_set,
202 },
203 {
204 .name = "fhc-middle",
205 .handler = fhc_middle_set,
206 },
207 {
208 .name = "fhc-right",
209 .handler = fhc_right_set,
210 .default_trigger = "heartbeat",
211 },
212};
213
214static int sunfire_fhc_led_probe(struct platform_device *pdev)
215{
216 return sunfire_led_generic_probe(pdev, fhc_led_types);
217}
218
219MODULE_ALIAS("platform:sunfire-clockboard-leds");
220MODULE_ALIAS("platform:sunfire-fhc-leds");
221
222static struct platform_driver sunfire_clockboard_led_driver = {
223 .probe = sunfire_clockboard_led_probe,
224 .remove = sunfire_led_generic_remove,
225 .driver = {
226 .name = "sunfire-clockboard-leds",
227 },
228};
229
230static struct platform_driver sunfire_fhc_led_driver = {
231 .probe = sunfire_fhc_led_probe,
232 .remove = sunfire_led_generic_remove,
233 .driver = {
234 .name = "sunfire-fhc-leds",
235 },
236};
237
238static struct platform_driver * const drivers[] = {
239 &sunfire_clockboard_led_driver,
240 &sunfire_fhc_led_driver,
241};
242
243static int __init sunfire_leds_init(void)
244{
245 return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
246}
247
248static void __exit sunfire_leds_exit(void)
249{
250 platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
251}
252
253module_init(sunfire_leds_init);
254module_exit(sunfire_leds_exit);
1// SPDX-License-Identifier: GPL-2.0-only
2/* leds-sunfire.c: SUNW,Ultra-Enterprise LED driver.
3 *
4 * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
5 */
6
7#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
8
9#include <linux/kernel.h>
10#include <linux/module.h>
11#include <linux/init.h>
12#include <linux/leds.h>
13#include <linux/io.h>
14#include <linux/platform_device.h>
15#include <linux/slab.h>
16
17#include <asm/fhc.h>
18#include <asm/upa.h>
19
20MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
21MODULE_DESCRIPTION("Sun Fire LED driver");
22MODULE_LICENSE("GPL");
23
24struct sunfire_led {
25 struct led_classdev led_cdev;
26 void __iomem *reg;
27};
28#define to_sunfire_led(d) container_of(d, struct sunfire_led, led_cdev)
29
30static void __clockboard_set(struct led_classdev *led_cdev,
31 enum led_brightness led_val, u8 bit)
32{
33 struct sunfire_led *p = to_sunfire_led(led_cdev);
34 u8 reg = upa_readb(p->reg);
35
36 switch (bit) {
37 case CLOCK_CTRL_LLED:
38 if (led_val)
39 reg &= ~bit;
40 else
41 reg |= bit;
42 break;
43
44 default:
45 if (led_val)
46 reg |= bit;
47 else
48 reg &= ~bit;
49 break;
50 }
51 upa_writeb(reg, p->reg);
52}
53
54static void clockboard_left_set(struct led_classdev *led_cdev,
55 enum led_brightness led_val)
56{
57 __clockboard_set(led_cdev, led_val, CLOCK_CTRL_LLED);
58}
59
60static void clockboard_middle_set(struct led_classdev *led_cdev,
61 enum led_brightness led_val)
62{
63 __clockboard_set(led_cdev, led_val, CLOCK_CTRL_MLED);
64}
65
66static void clockboard_right_set(struct led_classdev *led_cdev,
67 enum led_brightness led_val)
68{
69 __clockboard_set(led_cdev, led_val, CLOCK_CTRL_RLED);
70}
71
72static void __fhc_set(struct led_classdev *led_cdev,
73 enum led_brightness led_val, u32 bit)
74{
75 struct sunfire_led *p = to_sunfire_led(led_cdev);
76 u32 reg = upa_readl(p->reg);
77
78 switch (bit) {
79 case FHC_CONTROL_LLED:
80 if (led_val)
81 reg &= ~bit;
82 else
83 reg |= bit;
84 break;
85
86 default:
87 if (led_val)
88 reg |= bit;
89 else
90 reg &= ~bit;
91 break;
92 }
93 upa_writel(reg, p->reg);
94}
95
96static void fhc_left_set(struct led_classdev *led_cdev,
97 enum led_brightness led_val)
98{
99 __fhc_set(led_cdev, led_val, FHC_CONTROL_LLED);
100}
101
102static void fhc_middle_set(struct led_classdev *led_cdev,
103 enum led_brightness led_val)
104{
105 __fhc_set(led_cdev, led_val, FHC_CONTROL_MLED);
106}
107
108static void fhc_right_set(struct led_classdev *led_cdev,
109 enum led_brightness led_val)
110{
111 __fhc_set(led_cdev, led_val, FHC_CONTROL_RLED);
112}
113
114typedef void (*set_handler)(struct led_classdev *, enum led_brightness);
115struct led_type {
116 const char *name;
117 set_handler handler;
118 const char *default_trigger;
119};
120
121#define NUM_LEDS_PER_BOARD 3
122struct sunfire_drvdata {
123 struct sunfire_led leds[NUM_LEDS_PER_BOARD];
124};
125
126static int sunfire_led_generic_probe(struct platform_device *pdev,
127 struct led_type *types)
128{
129 struct sunfire_drvdata *p;
130 int i, err;
131
132 if (pdev->num_resources != 1) {
133 dev_err(&pdev->dev, "Wrong number of resources %d, should be 1\n",
134 pdev->num_resources);
135 return -EINVAL;
136 }
137
138 p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
139 if (!p)
140 return -ENOMEM;
141
142 for (i = 0; i < NUM_LEDS_PER_BOARD; i++) {
143 struct led_classdev *lp = &p->leds[i].led_cdev;
144
145 p->leds[i].reg = (void __iomem *) pdev->resource[0].start;
146 lp->name = types[i].name;
147 lp->brightness = LED_FULL;
148 lp->brightness_set = types[i].handler;
149 lp->default_trigger = types[i].default_trigger;
150
151 err = led_classdev_register(&pdev->dev, lp);
152 if (err) {
153 dev_err(&pdev->dev, "Could not register %s LED\n",
154 lp->name);
155 for (i--; i >= 0; i--)
156 led_classdev_unregister(&p->leds[i].led_cdev);
157 return err;
158 }
159 }
160
161 platform_set_drvdata(pdev, p);
162
163 return 0;
164}
165
166static int sunfire_led_generic_remove(struct platform_device *pdev)
167{
168 struct sunfire_drvdata *p = platform_get_drvdata(pdev);
169 int i;
170
171 for (i = 0; i < NUM_LEDS_PER_BOARD; i++)
172 led_classdev_unregister(&p->leds[i].led_cdev);
173
174 return 0;
175}
176
177static struct led_type clockboard_led_types[NUM_LEDS_PER_BOARD] = {
178 {
179 .name = "clockboard-left",
180 .handler = clockboard_left_set,
181 },
182 {
183 .name = "clockboard-middle",
184 .handler = clockboard_middle_set,
185 },
186 {
187 .name = "clockboard-right",
188 .handler = clockboard_right_set,
189 .default_trigger = "heartbeat",
190 },
191};
192
193static int sunfire_clockboard_led_probe(struct platform_device *pdev)
194{
195 return sunfire_led_generic_probe(pdev, clockboard_led_types);
196}
197
198static struct led_type fhc_led_types[NUM_LEDS_PER_BOARD] = {
199 {
200 .name = "fhc-left",
201 .handler = fhc_left_set,
202 },
203 {
204 .name = "fhc-middle",
205 .handler = fhc_middle_set,
206 },
207 {
208 .name = "fhc-right",
209 .handler = fhc_right_set,
210 .default_trigger = "heartbeat",
211 },
212};
213
214static int sunfire_fhc_led_probe(struct platform_device *pdev)
215{
216 return sunfire_led_generic_probe(pdev, fhc_led_types);
217}
218
219MODULE_ALIAS("platform:sunfire-clockboard-leds");
220MODULE_ALIAS("platform:sunfire-fhc-leds");
221
222static struct platform_driver sunfire_clockboard_led_driver = {
223 .probe = sunfire_clockboard_led_probe,
224 .remove = sunfire_led_generic_remove,
225 .driver = {
226 .name = "sunfire-clockboard-leds",
227 },
228};
229
230static struct platform_driver sunfire_fhc_led_driver = {
231 .probe = sunfire_fhc_led_probe,
232 .remove = sunfire_led_generic_remove,
233 .driver = {
234 .name = "sunfire-fhc-leds",
235 },
236};
237
238static struct platform_driver * const drivers[] = {
239 &sunfire_clockboard_led_driver,
240 &sunfire_fhc_led_driver,
241};
242
243static int __init sunfire_leds_init(void)
244{
245 return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
246}
247
248static void __exit sunfire_leds_exit(void)
249{
250 platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
251}
252
253module_init(sunfire_leds_init);
254module_exit(sunfire_leds_exit);